"Rock and Roll" and M.H. Orodenker

It is M.H. Orodenker who now appears to be one of the earliest persons to consistently use the phrase "rock and roll" in print with a range of meanings that it encompasses today. This M.H. Orodenker is the author of each of the record reviews in Billboard so far cited as using that phrase as well as a number of other uses, through the early 1940's. I'm not sure you heard it here first, but you may have. The question is where M.H. Orodenker heard it first...